(PHP 5 >= 5.3.0, PHP 7, PHP 8)
DateTime::sub -- date_sub — Subtracts an amount of days, months, years, hours, minutes and seconds from a DateTime object
Object-oriented style
Procedural style
Modifies the specified DateTime object, by subtracting the specified DateInterval object.
Like DateTimeImmutable::sub() but works with DateTime.
The procedural version takes the DateTime object as its first argument.
object
Procedural style only: A DateTime object returned by date_create(). The function modifies this object.
interval
A DateInterval object
Returns the modified DateTime object for method chaining.